18920560

素因数分解:

$2^4\times 5^1\times {\mathrm{236507}}^1$

素因数の和:236520

約数の個数: 20

約数和(自身を含む): 43990488

約数和(自身を除く): 25069928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 236507, 473014, 946028, 1182535, 1892056, 2365070, 3784112, 4730140, 9460280, 18920560]

約数ペア:

[(1, 18920560), (2, 9460280), (4, 4730140), (5, 3784112), (8, 2365070), (10, 1892056), (16, 1182535), (20, 946028), (40, 473014), (80, 236507)]